Mike, Subsection 46.035 of the Penal Code, unlawful carrying of handgun by license holder.
(b) A License holder commits an offense if the license holder intentionally, knowingly, or recklessly carries a handgun under the authority of Subchapter H, Chapter411, Government Code, regardless of whether tyhe handgun is concealed, on or about the license holder's person:
(5) in an amusment park; or
(f) in this section:
(1) "amusment park" means a permanant indoor or outdoor facility or park where amusment rides are available for use by the public that is located in a county with a population of more than one million, encompasses at least 75 acres in surface area, is enclosed with access only through controled entries, is open for operation more than 120 days in each calender year, and has security guards on the premise at all times. the term does not include any public or private driveway, street, sidewalk, or walkway, parking lot, parking garage, or other parking area.
As I said, tailor written for Six Flags, Sea World, Fiesta Texas, and others I am sure I missed.